Holy moly, Google Apps for Domains is slick. This doesn’t affect you, our members, directly but we switched over our backend mail system (for office and support mail, calendars, etc.) to Google Apps for Domains yesterday.
I told the guys I was a little leery about giving Google control of our mail system but it turned out to be completely painless and, so far, it works great. Easy, fast, and free. What more could a guy want from his outsourced email system?